<!DOCTYPE html>
<html lang="en">
    <head>
        <meta charset="UTF-8">
        <meta http-equiv="x-ua-compatible" content="IE=edge">
        <meta name="viewport" content="width=device-width,initial-scale=1.0">
        <title>Title</title>
    </head>
    <body>
        <form action="/upload" method="post" enctype="multipart/form-data">
            请上传文件:<input type="file" name="file" id=""><br>
            <input type="submit" value="上传">
        </form>
    </body>
</html>